The premium four inch lens with square holder for Trotec machines is typically used to achieve a longer vertical cut.  And, for cutting thicker materials.  However, this comes at a price--that being slower cutting speed caused by the larger size of the laser beam.  Therefore, we find that customers using this lens will have higher laser powers such as 60 or more watts.  However, the higher laser power is not needed for some applications, such as cutting thick foam (not a very dense material).
 
4" Focus Lens with Holder for Trotec Laser Engraving Machines.

Low price, good quality. Why pay excessive prices? High quality machined aluminum base. Premium grade lens. Save a bundle.

Fits any Trotec CO2 Laser Engraver including Trotec Speedy 300, Trotec Speedy 400, and Rayjet 300. Add a quality lens to your Trotec Laser Engraver today.

Features the premium grade focus lens. Great for most laser engraving work. See our other listings for the premium grade focus lens.

Includes both the blue anodized lens holder with lens attached.
 
OPTIONAL: Nozzles with three sizes of holes so that you can choose the best air stream for the best quality. Easy to change nozzles, great for higher quality.  After you vary the nozzles you will quickly learn which colored nozzle to choose for the material/job at hand.

Fast installation. Simply remove the old lens/holder and insert this lens/holder. Nothing could be faster!

Includes 4" premium-grade laser lens attached to holder.